JP2009079384A - Drainage structure of washbowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure water cut-off at a connection part between a washbowl and a drain cylinder without exposing a boundary part of the washbowl and drain cylinder to the inner surface side of the washbowl. <P>SOLUTION: A lower end of the inner peripheral surface of a drain port part 2 is indented to the outside to form a fitting recess 5 opened downward. An upper part of the fitting recess 5 is formed as a cover part 7. The drain cylinder 15 connected to the drain port part 2 has a cylindrical part 17 opened upward and downward, and a flange part 18 integrally projected outward from a position lower than the upper end of the cylindrical part 17. A portion above a part provided with the flange part 18 of the cylindrical part 17 is formed as a fitting part 19. The fitting part 19 of the drain cylinder 15 is fitted into the fitting recess 5 of the washbowl 1. An O-ring 31 is interposed between the outer peripheral surface of the fitting part 19 and the inner peripheral surface of the fitting recess 5. The upper part of the fitting part 19 is covered with a cover part 7 of the drain port part 2. The flange part 18 of the drain cylinder 15 is stuck to the lower face of the washbowl 1 by a plurality of mounting screws 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a drainage structure for a wash bowl.

  As shown in FIG. 5, the conventional drainage structure of the wash bowl is such that a drain tube 15 is dropped into the drain port 2 of the wash bowl 1 from above, and a nut 49 is provided at a portion of the drain tube 15 protruding below the wash bowl 1. And the nut 49 is tightened to clamp the periphery of the drain port 2 between the nut 49 and the flange 18 projecting outward from the upper end of the drain tube 15. 1 was attached to the drainage port 2 of 1. However, in this drainage structure, the boundary between the flange portion 19 of the drainage cylinder 15 and the wash bowl 1 is exposed to the inner surface side of the wash bowl 1 and the dust tends to collect. Need to be cleaned.

  Moreover, the drain tube attached from the downward direction of a wash bowl like patent document 1, for example is also known. This drain tube comes into contact with the lower end surface of the drain port that protrudes downward from the bottom of the wash bowl through the packing, and the flange portion that projects integrally outward from the upper end of the drain tube Is fixed to the lower surface of the wash bowl with a plurality of mounting screws, and the drain tube is not exposed on the inner surface side of the wash bowl, and the above problem is improved. However, in this drainage structure, the drainage cylinder is fixed by the mounting screw, and unevenness occurs on the lower surface of the wash bowl. Therefore, the drainage pipe is fixed in a state of being in close contact with the lower face of the wash bowl. It is difficult. For this reason, there exists a problem that the water stop performance by the said packing falls and a water leak tends to occur.

Moreover, in the other example of patent document 1, the outer periphery which protruded outward from the upper peripheral part which raised the flange part of the drain pipe from the inner peripheral flange part, the outer peripheral edge of the inner peripheral flange part, and the upper end part of the upper part The packing is sandwiched between the corner part consisting of the inner peripheral flange part and the upright part, and the lower end outer corner part of the drainage port part, which is the part that holds the packing, that is, the upper end of the drainage cylinder Since the strength against deformation of the flange portion protruding outward is weak, the flange portion is deformed when the mounting screw is tightened, and there is a possibility that the water stoppage performance due to packing may be deteriorated.
JP 2002-266403 A

  The present invention has been made in view of the above-described conventional problems, and the boundary portion between the wash bowl and the drain tube is not exposed to the inner surface side of the wash bowl, and the stop at the connection portion between the wash bowl and the drain tube is provided. It is an object of the present invention to provide a drainage structure for a wash bowl that can reliably supply water.

  In order to solve the above-mentioned problem, the drainage structure of the wash bowl according to the present invention is formed integrally with the wash bowl 1 so that the drain port 2 protrudes downward from the bottom of the wash bowl 1. A drainage connected to the drain port 2 by forming a recess 5 that is recessed downward on the lower end of the inner peripheral surface and opening downward, and the upper part of the recess 5 is a cover 7. The cylinder 15 includes a cylinder part 17 that opens up and down, and a flange part 18 that integrally protrudes outward from a position below the upper end of the cylinder part 17. A portion above the provided portion is used as a fitting portion 19, and the fitting portion 19 of the drainage cylinder 15 is fitted into the fitting recess 5 of the wash bowl 1, and the outer peripheral surface of the fitting portion 19 and the fitting recess are inserted. The O-ring 31 is interposed between the inner peripheral surface of the place 5 and the upper portion of the fitting portion 19 is covered with the cover portion 7 of the drain port portion 2. Serial characterized by secured to the lower surface of the washbowl 1 a flange portion 18 of the drainage tube 15 by a plurality of mounting screws 11. As described above, the boundary portion between the wash bowl 1 and the drain tube 15 is not exposed to the inner surface side of the wash bowl 1 by covering the upper portion of the fitting portion 19 of the drain tube 15 with the cover portion 7 formed in the drain port 2. You can Further, the O-ring 31 is compressed in the direction perpendicular to the vertical direction in which the tightening force of the mounting screw 11 acts between the outer peripheral surface of the fitting portion 19 and the inner peripheral surface of the fitting recess 5. Even when the tightening force is insufficient, the O-ring 31 can reliably stop the water. Moreover, the fitting part 19 can be comprised by the upper end part which protruded slightly from the flange part 18 of the cylinder part 17 of the drainage cylinder 15, and the intensity | strength with respect to a deformation | transformation of the fitting part 19 can be raised, thereby the fitting part 19 Thus, the O-ring 31 can be reliably compressed.

  A second aspect of the present invention is the first aspect of the present invention, in the first aspect, wherein the flange portion 18 includes an inner peripheral flange portion 22 protruding outward from the cylindrical portion 17, an upright portion 23 raised from the outer peripheral edge of the inner peripheral flange portion 22, and An annular fitting groove which is configured by an outer peripheral flange portion 24 protruding outward from the upper end of the upright portion 23 and opens upward between the upright portion 23 of the flange portion 18 and the fitting portion 19 of the cylindrical portion 17. 25, the lower end portion of the drain port 2 is fitted into the annular fitting groove 25, and the outer peripheral flange portion 24 of the flange portion 18 is fixed to the lower surface of the wash bowl 1 with a plurality of mounting screws 11. And The lower end portion of the drain port portion 2 is fitted into the annular fitting groove 25, and the lower end portion of the drain port portion 2 can be supported from both the inside and outside by the inner fitting portion 19 and the outer upright portion 23, and fitted in this state. The O-ring 31 can be compressed by the insertion portion 19. Even if water leaks from the connection portion between the drain port 2 and the drain cylinder 15, this water can be stored in the fitting groove 25 and evaporated by natural drying.

  Further, a third aspect of the present invention includes the water stop cock (Kelep 37 in the embodiment) for stopping the drain port 2 by directly contacting the inner surface of the wash bowl 1 according to the first or second aspect. It is characterized by. The stop cock does not come into contact with the drain cock that is difficult to clean, and the drain cock is difficult to get dirty.

  In the invention which concerns on Claim 1, the upper part of the fitting part of a drain tube is covered with the cover part formed in the drain port part, and it can prevent the boundary part of a wash bowl and a drain tube from being exposed to the inner surface side of a wash bowl. In addition, even when the tightening force of the mounting screw is insufficient, the outer peripheral surface of the fitting portion and the inner peripheral surface of the fitting recess are compressed in a direction perpendicular to the vertical direction in which the tightening force of the mounting screw works. Water can be reliably stopped by the O-ring. In addition, the fitting part can be composed of an upper end part slightly projecting from the flange part of the drainage cylinder, so that the strength against deformation can be increased, so that the O-ring can be reliably compressed by the fitting part. The water stop by can be made more reliable.

  Further, in the invention according to claim 2, in addition to the effect of the invention according to claim 1, the lower end portion of the drain port portion is fitted into the annular fitting groove, and the lower end portion of the drain port portion is set to the inner fitting portion. It can be supported from both the inside and outside by the outside upright, and the O-ring can be compressed more reliably at the fitting portion. In addition, even if water leaks from the connection between the drain port and the drain tube, this water can be stored in the insertion groove and evaporated by natural drying. It is possible to prevent water from the part from leaking out of the drainage device.

  In addition, in the invention according to claim 3, in addition to the effect of the invention according to claim 1 or 2, the stop cock does not come into contact with the drain cock that is difficult to clean, so that the drain cock is hardly soiled, and the washbasin Even if the place where the water stopcock comes into contact with the inner surface of the bowl is contaminated, the dirt is attached to the inner surface of the wash bowl which is easy to clean, so that the cleaning becomes easy.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. In the drainage structure of the wash bowl 1 as an example of this embodiment, a drainage tool 4 that constitutes a part of the drainage flow path is connected to a drainage opening 2 that integrally protrudes downward from the bottom of the washbasin bowl 1. The water flowing from the drain port 2 is discharged to the outside through the drainage device 4.

  A wash bowl 1 shown in FIG. 1 is provided on a wash basin and is made of synthetic resin. The lower end portion of the inner peripheral surface of the drain port portion 2 protruding from the bottom portion of the wash bowl 1 is recessed outward through a horizontal step surface 6, thereby opening downward at the lower end portion of the drain port portion 2. A circular insertion recess 5 is formed. A portion protruding inward from the inner peripheral surface of the fitting recess 5 of the drain port portion 2, that is, an upper portion of the fitting recess 5 of the drain port portion 2 constitutes a cover 7. The inner peripheral surface of the cover part 7 is a trumpet-shaped curved surface part 8 whose diameter gradually increases from the lower end toward the upper side. In the illustrated example, the inner peripheral surface above the cover portion 7 of the drain port portion 2 is also a trumpet-shaped curved surface portion 9 whose diameter gradually increases toward the upper side, and the curved surface portion 9 is connected to the inner bottom surface of the wash bowl 1. The trumpet-shaped curved surface portion 8 is smoothly connected. In addition, the lower end of the inner peripheral surface of the cover part 7 is connected to the level | step difference surface 6 which comprises the upper bottom face of the insertion recess 5. FIG.

  As shown in FIG. 3, on the lower surface of the wash bowl 1, fixing portions 10 are integrally projected downward at a plurality of locations in the circumferential direction of the drain port portion 2 outside the drain port portion 2. Each fixing portion 10 is integrally connected to the protruding proximal end portion of the drain port portion 2. In the illustrated example, the fixing portions 10 are provided at four intervals in the circumferential direction of the drain port portion 2 at equal intervals. The lower surface of each fixing portion 10 is a horizontal surface located at the same level, and a screw hole 13 is formed in the center portion. A fitting recess 14 that opens downward is formed between the adhering portions 10 adjacent to each other in the circumferential direction of the drain port portion 2.

  The drainage device 4 is constituted by a drain tube 15 (see FIG. 1) connected to the drain port 2 and a connecting pipe 16 (see FIG. 2) connected to the lower end of the drain tube 15. The drain cylinder 15 and the connecting pipe 16 are made of synthetic resin. In addition, illustration of the connecting pipe 16 is abbreviate | omitted in FIG.

  As shown in FIG. 1, the drainage cylinder 15 includes a straight tubular cylinder portion 17 that opens up and down, a flange portion 18 that integrally projects outward from a position slightly below the upper end of the cylinder portion 17, and The connecting port portion 20 integrally protrudes from the position below the flange portion 18 of the cylindrical portion 17 toward the side. A portion of the cylindrical portion 17 above the portion provided with the flange portion 18 is a fitting portion 19, and an O-ring housing groove 21 is formed on the outer peripheral surface of the cylindrical fitting portion 19.

  The flange portion 18 includes an inner peripheral flange portion 22 that protrudes outward from the cylindrical portion 17, an upright portion 23 that rises from the outer peripheral edge of the inner peripheral flange portion 22, and an outer periphery that protrudes outward from the upper end of the upper portion 23. It is comprised with the collar part 24. FIG. The upper end portion of the upright portion 23 protrudes upward from the fitting portion 19, and the outer peripheral flange portion 24 is located above the fitting portion 19. An annular fitting groove 25 that opens upward is formed between the upright portion 23 and the fitting portion 19, and the lower end portion of the drain port portion 2 is fitted into the fitting groove 25. The lower end portion of the upright portion 23 protrudes upward from the inner peripheral flange portion 22, but the portion above the lower end portion is inclined so as to be located outward as the upper side, and the inclination angle of this portion with respect to the vertical direction Is larger than the inclination angle of the outer peripheral surface of the drain port portion 2 formed so that the outer diameter decreases toward the lower side. Therefore, the lower end of the drain port 2 can be easily fitted into the fitting groove 25.

  As shown in FIG. 4, the outer peripheral flange 24 is provided with screw insertion holes 28 at a plurality of locations in the circumferential direction corresponding to the screw holes 13 of the wash bowl 1. Further, a fitting portion 26 formed of an annular rib in a plan view is integrally projected upward at a location corresponding to the fitting recess 14 of the wash bowl 1 of the outer peripheral flange 24. Each fitting portion 26 has an outer shape that matches the fitting recess 14, and can be fitted into the corresponding fitting recess 14. In addition, the site | part between each fitting part 26 which is a part in which the screw penetration hole 28 is formed in the upper surface of the outer periphery collar part 24 is a horizontal surface.

  In order to connect the drain tube 15 to the drain port 2 of the wash bowl 1, the drain port 2 with the fitting portion 19 of the tube portion 17 of the drain tube 15 stored in the O ring storage groove 21 in the O ring 31. The lower end of the drainage port 2 is fitted into the lower end of the fitting groove 25 of the drain tube 15, and O is inserted between the fitting portion 19 and the inner peripheral surface of the fitting recess 5. While interposing the ring 31 in a compressed state, a portion between the fitting portions 26 on the upper surface of the outer peripheral flange 24 is brought into contact with the lower surface of the corresponding fixing portion 10. At this time, each fitting portion 26 of the outer peripheral flange portion 24 of the flange portion 18 is fitted into the corresponding fitting recess 14 from below to position the drain tube 15 in the circumferential direction. Then, in this state where the flange portion 18 of the drainage cylinder 15 is in contact with the lower surface of the wash bowl 1, the mounting screws 11 are inserted into the respective screw insertion holes 28 from below and screwed into the corresponding screw holes 13, respectively. The mounting screw 11 is tightened to fix the outer peripheral flange portion 24 of the flange portion 18 along the plurality of fixing portions 10 of the wash bowl 1, and thereby the upper surface (that is, the fitting) of the inner peripheral flange portion 22 of the flange portion 18. The ring-shaped packing 32 placed on the bottom surface of the groove 25 is compressed in the vertical direction with the lower end surface of the drain port 2 facing the inner peripheral flange 22. In this connected state, the inner peripheral surface of the fitting portion 19 of the drain tube 15 is positioned slightly outside the inner peripheral edge of the cover portion 7, and the upper portion of the fitting portion 19 is covered by the cover portion 7 of the wash bowl 1. .

  Further, the downstream end portion of the connection pipe 48 communicating with the overflow hole provided in the wash bowl 1 is connected to the connection port portion 20 of the drain tube 15. As a result, the water that has flowed into the overflow hole from the wash bowl 1 flows to the cylindrical portion 17 via the connecting pipe 48 and is discharged via the connecting pipe 16 in the same manner as the drainage from the drain port 2.

  As shown in FIG. 2, the connecting pipe 16 includes a vertical pipe portion 29 and a release introduction port portion 30 that protrudes laterally from the middle of the vertical pipe portion 29. In order to connect the connecting pipe 16 to the drain cylinder 15, the upper end of the vertical pipe 29 is connected to the lower end of the cylinder 17 by a synthetic resin cap nut 33. A discharge pipe (not shown) for draining outside is connected to the lower end portion of the connection pipe 16. Further, a cap 35 is detachably attached to the distal end portion of the release introduction port portion 30, and a later-described release 46 is inserted into the release introduction port portion 30 through the cap 35.

  A pop-up drain plug 36 is accommodated in the drainage tool 4 constituted by the drain cylinder 15 and the connecting pipe 16. As shown in FIG. 1, the drain plug 36 includes a kerep 37 as a water stop cock of the drain port portion 2, a shaft 38 that hangs down from the kerep 37, and hair catchers 39 a and 39 b that are arranged at two positions above and below the shaft 38. have. The kerep 37 and the hair catchers 39a and 39b are made of resin, while the shaft 38 is made of metal.

  The shaft 38 is inserted into a shaft insertion hole 41 formed at the center of each hair catcher 39a, 39b so as to be movable up and down. A stopper 42 that protrudes outward is provided at a portion that protrudes downward from the lower hair catcher 39b of the shaft 38, and the stopper 42 is located outside the inner peripheral edge of the shaft insertion hole 41 of the lower hair catcher 39b. It protrudes.

  The shaft 38 and the hair catchers 39a and 39b of the drain plug 36 are inserted from the upper side of the drain port 2 into the cylinder part 17 of the drain cylinder 15 and the vertical pipe part 29 of the connecting pipe 16 so as to be freely inserted and removed and supported as follows. Is done. That is, a seat 44 is projected from a position below the location where the connection port 20 is provided on the inner peripheral surface of the cylindrical portion 17, and a lower hair catcher 39 b is placed on the seat 44. The upper-stage hair catcher 39a is placed on the lower-stage hair catcher 39b. Each hair catcher 39a, 39b has an outer diameter that is substantially the same as the inner diameter of the drain tube 15. The inner peripheral surface of the tube portion 17 prevents radial displacement.

  Further, as shown in FIG. 2, a push-up member 45 for pushing up the shaft 38 inserted into the drainage device 4 is disposed in the vertical pipe portion 29. The push-up member 45 is connected to one end of the release 46, and the other end of the release 46 is connected to an operation knob (not shown) provided at the peripheral edge of the upper opening of the wash bowl 1. By operating, the push-up member 45 is moved to the position indicated by the broken line or the solid line in FIG. 2 to move the shaft 38 up and down, thereby opening and closing the drain port 2 with the kelp 37 provided at the upper end of the shaft 38. . As shown in FIG. 2, the kerep 37 performs water stoppage of the drain port portion 2 by directly applying a water stop packing 40 provided on the outer peripheral surface to the inner peripheral surface of the drain port portion 2. Further, if the kelp 37 is pulled upward, the hair catchers 39a and 39b in the drainage device 4 can be supported by the stoppers 42 of the shaft 38 suspended from the keleep 37. Therefore, if the kerep 37 and the shaft 38 are pulled out above the drain port portion 2, the upper and lower two-stage hair catchers 39a, 39b can be pulled out above the drain port portion 2 together with the shaft 38, whereby the hair catcher 39a, 39b can be taken out and easily cleaned.

  The drainage structure of the present invention described above covers the upper part of the fitting part 19 of the drainage cylinder 15 with the cover part 7 formed in the drainage port part 2 so that the boundary part between the washbowl 1 and the drainage cylinder 15 is the washbowl bowl 1. It can be prevented from being exposed on the inner surface side of the. Further, since the connecting portion between the drain port 2 and the drain cylinder 15 is double sealed with the O-ring 31 and the packing 32, the water tightness can be improved. Since the surface and the inner peripheral surface of the fitting recess 5 are compressed in a direction perpendicular to the vertical direction in which the tightening force of the mounting screw 11 acts, the O-ring is also used when the tightening force of the mounting screw 11 is insufficient. The water can be reliably stopped by 31. Moreover, since the fitting part 19 is comprised by the upper end part which protruded slightly from the flange part 18 of the cylinder part 17 of the drainage cylinder 15, the intensity | strength with respect to a deformation | transformation of this fitting part 19 can be raised, and, thereby, a fitting part 19, the O-ring 31 can be reliably compressed, and water stoppage by the O-ring 31 can be made more reliable. Further, in this case, the lower end portion of the drain port portion 2 is fitted into the annular fitting groove 25, and the lower end portion of the drain port portion 2 is supported from both inside and outside by the inner fitting portion 19 and the outer upright portion 23. In this respect, the O-ring 31 can be reliably compressed by the fitting portion 19. Moreover, even if water leaks from the connecting portion between the drain port 2 and the drain tube 15, this water can be stored in the fitting groove 25 formed by the flange-shaped flange 18 and dried naturally. If the amount is small, it is possible to prevent water from the connecting portion between the drain port 2 and the drain cylinder 15 from leaking out of the drainage device 4.

  Further, since the inner peripheral surface of the cover part 7 is a trumpet-shaped curved surface part 8 whose diameter gradually increases from the lower end toward the upper side, the cover part 7 does not get in the way when the drain plug 36 is pulled out. It is possible to prevent the wash bowl 1 from being damaged by the drain plug 36 when the 36 is taken in and out of the drain port 2.

  In general, the contact portion of the kerep 37 is easily contaminated, but in this example, the kelp 37 as a water stopcock is brought into direct contact with the inner surface of the wash bowl 1 as described above, and the drain port portion. Since the water 2 is stopped, the dirt due to the Kelep 37 is attached to the inner surface of the wash bowl 1 which is easy to clean, and the maintenance becomes easy. In addition, the pressure of the water stored in the wash bowl 1 after the drain port 2 is stopped by the kerep 37 is not applied to the connection portion between the drain port portion 2 and the drain tube 15, and water leakage from the connection portion is ensured. Can be prevented.

It is sectional drawing which shows the connection state of the drain outlet part and a drain pipe in an example of embodiment of this invention. It is sectional drawing which shows the connection state of a drain cylinder same as the above and a connection pipe. It is a bottom view of the drainage port vicinity of the wash bowl same as the above. It is a top view of a drain cylinder same as the above. It is a partially cutaway sectional view showing a conventional drainage structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Washing bowl 2 Drain port part 5 Insertion recessed part 7 Cover part 15 Drain pipe 17 Cylinder part 18 Flange part 19 Fitting part 22 Inner periphery collar part 23 Upright part 24 Outer peripheral collar part 25 Insertion groove 31 O-ring

Claims (3)

  A drain outlet projecting downward from the bottom of the wash bowl is formed integrally with the wash bowl, and a fitting recess that opens downward is formed by recessing the lower end of the inner peripheral surface of the drain bowl to the outside. In addition, the upper part of the fitting recess is a cover part, and the drain tube connected to the drain port part is directed outward from a cylinder part that opens up and down and a position below the upper end of the cylinder part. A flange portion projecting integrally, and a portion above the portion of the tubular portion provided with the flange portion is used as a fitting portion, and the fitting portion of the drainage tube is fitted into the fitting recess of the wash bowl. In addition, an O-ring is interposed between the outer peripheral surface of the fitting portion and the inner peripheral surface of the fitting recess, the upper portion of the fitting portion is covered with the cover portion of the drain port portion, and a plurality of flange portions of the drain tube are provided. A drainage structure for a wash bowl, which is fixed to the lower surface of the wash bowl with a mounting screw.   The flange portion is composed of an inner peripheral flange portion protruding outward from the cylindrical portion, an upright portion raised from the outer peripheral edge of the inner peripheral flange portion, and an outer peripheral flange portion protruding outward from the upper end of the upper portion. An annular fitting groove that opens upward is formed between the upper portion of the flange portion and the fitting portion of the cylindrical portion, and the lower end portion of the drain port is fitted into the annular fitting groove, The drainage structure of a wash bowl according to claim 1, wherein the outer peripheral flange portion of the wash section is fixed to the lower surface of the wash bowl with a plurality of mounting screws.   The drainage structure for a wash bowl according to claim 1 or 2, further comprising a water stop cock for directly abutting the inner surface of the wash bowl to stop the drain port.

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